>I'm trying to connect a 3.3v GPS device to a 5v PIC, now I need to
>adapt the signals.  I've looked back in the archives, and Brent Brown
>suggested the bellow, but I have a few questions.

Are you sure that it is not transmitting at RS232 levels? Many GPS devices
have a MAX232 or equivalent on them to provide true RS232 levels out, even
though supplied with only the low voltage.

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